diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
deleted file mode 100644
index f64b45fea6b..00000000000
--- a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[hit-test-floats-002.html]
-  [Hit test float]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
new file mode 100644
index 00000000000..4bfb0c2053a
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-004.html]
+  [Miss float below something else]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/css-transforms/transform-scale-hittest.html.ini b/tests/wpt/metadata-layout-2020/css/css-transforms/transform-scale-hittest.html.ini
index f8e7e539aae..4a1e8110f6f 100644
--- a/tests/wpt/metadata-layout-2020/css/css-transforms/transform-scale-hittest.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/css-transforms/transform-scale-hittest.html.ini
@@ -2,6 +2,3 @@
   [Hit test intersecting scaled box]
     expected: FAIL
 
-  [Hit test within unscaled box]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/css/css-transitions/no-transition-from-ua-to-blocking-stylesheet.html.ini b/tests/wpt/metadata-layout-2020/css/css-transitions/no-transition-from-ua-to-blocking-stylesheet.html.ini
index 70a00a101f6..e35a452a186 100644
--- a/tests/wpt/metadata-layout-2020/css/css-transitions/no-transition-from-ua-to-blocking-stylesheet.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/css-transitions/no-transition-from-ua-to-blocking-stylesheet.html.ini
@@ -1,2 +1,2 @@
 [no-transition-from-ua-to-blocking-stylesheet.html]
-  expected: FAIL
+  expected: TIMEOUT
diff --git a/tests/wpt/metadata-layout-2020/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini b/tests/wpt/metadata-layout-2020/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
index c884dc82eab..628b1fab770 100644
--- a/tests/wpt/metadata-layout-2020/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
@@ -2,6 +2,3 @@
   [listeners are called when <iframe> is resized]
     expected: FAIL
 
-  [listeners are called correct number of times]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini b/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
index 61d9ed1b81f..18aea709ba7 100644
--- a/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
@@ -315,18 +315,18 @@
   [<iframe>: separate response Content-Type: text/html;" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: */* text/html]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;x=" text/plain]
-    expected: FAIL
-
   [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
+  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html */*]
+    expected: FAIL
+
+  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
index 87c807a49ff..d4ba399b762 100644
--- a/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,3 +11,6 @@
   [X-Content-Type-Options%3A%20nosniff%0C]
     expected: FAIL
 
+  [X-Content-Type-Options%3A%20'NosniFF']
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
similarity index 71%
rename from tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
rename to tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
index 51f8272a6de..dc2e45516de 100644
--- a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
@@ -1,4 +1,4 @@
-[traverse_the_history_3.html]
+[traverse_the_history_5.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini b/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini
index 6852d7663de..c12c0f8ae48 100644
--- a/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini
@@ -1,8 +1,4 @@
 [skip-document-with-fragment.html]
-  expected: TIMEOUT
   [Autofocus elements in iframed documents with URL fragments should be skipped.]
     expected: FAIL
 
-  [Autofocus elements in top-level browsing context's documents with URI fragments should be skipped.]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini b/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
index f45aaafe1c5..af14e19a466 100644
--- a/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
@@ -1,16 +1,20 @@
 [supported-elements.html]
+  expected: TIMEOUT
   [Contenteditable element should support autofocus]
     expected: FAIL
 
   [Host element with delegatesFocus including no focusable descendants should be skipped]
-    expected: FAIL
+    expected: NOTRUN
 
   [Element with tabindex should support autofocus]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Area element should support autofocus]
-    expected: FAIL
+    expected: NOTRUN
 
   [Host element with delegatesFocus should support autofocus]
-    expected: FAIL
+    expected: NOTRUN
+
+  [Non-HTMLElement should not support autofocus]
+    expected: NOTRUN
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index 7a36937927c..f4f994c5d6f 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,4 +1,5 @@
 [iframe_sandbox_popups_nonescaping-3.html]
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN
 
diff --git a/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini b/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
index 4d4449c983e..d16e3ccb769 100644
--- a/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
@@ -4,7 +4,7 @@
     expected: FAIL
 
   [Rejection handler on pending-then-rejected promise]
-    expected: TIMEOUT
+    expected: FAIL
 
   [Sanity check: this all works as expected with no promises involved]
     expected: FAIL
@@ -16,5 +16,5 @@
     expected: FAIL
 
   [Fulfillment handler on pending-then-fulfilled promise]
-    expected: FAIL
+    expected: TIMEOUT
 
diff --git a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
index 02596a53395..84787faa62f 100644
--- a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
+++ b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
@@ -71,3 +71,6 @@
   [X Rendered audio for channel 5 does not equal [0,0.0626220703125,0.125030517578125,0.18695068359375,0.24810791015625,0.308319091796875,0.3673095703125,0.42486572265625,0.480743408203125,0.53472900390625,0.58660888671875,0.636199951171875,0.68328857421875,0.727691650390625,0.76922607421875,0.8077392578125...\] with an element-wise tolerance of {"absoluteThreshold":0.000030517578125,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[1\]\t3.6732959747314453e-1\t6.2622070312500000e-2\t3.0470752716064453e-1\t4.8658168859649127e+0\t3.0517578125000000e-5\n\t[2\]\t6.8329977989196777e-1\t1.2503051757812500e-1\t5.5826926231384277e-1\t4.4650639949963384e+0\t3.0517578125000000e-5\n\t[3\]\t9.0373212099075317e-1\t1.8695068359375000e-1\t7.1678143739700317e-1\t3.8340669508039502e+0\t3.0517578125000000e-5\n\t[4\]\t9.9780619144439697e-1\t2.4810791015625000e-1\t7.4969828128814697e-1\t3.0216621502152523e+0\t3.0517578125000000e-5\n\t[5\]\t9.5236867666244507e-1\t3.0831909179687500e-1\t6.4404958486557007e-1\t2.0889059484187866e+0\t3.0517578125000000e-5\n\t...and 44055 more errors.\n\tMax AbsError of 1.9999977350234985e+0 at index of 32411.\n\t[32411\]\t9.9999773502349854e-1\t-1.0000000000000000e+0\t1.9999977350234985e+0\t1.9999977350234985e+0\t3.0517578125000000e-5\n\tMax RelError of Infinity at index of 12348.\n\t[12348\]\t9.5105654001235962e-1\t0.0000000000000000e+0\t9.5105654001235962e-1\tInfinity\t3.0517578125000000e-5\n]
     expected: FAIL
 
+  [X Rendered audio for channel 5 does not equal [0,0.0626220703125,0.125030517578125,0.18695068359375,0.24810791015625,0.308319091796875,0.3673095703125,0.42486572265625,0.480743408203125,0.53472900390625,0.58660888671875,0.636199951171875,0.68328857421875,0.727691650390625,0.76922607421875,0.8077392578125...\] with an element-wise tolerance of {"absoluteThreshold":0.000030517578125,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[1\]\t3.6732959747314453e-1\t6.2622070312500000e-2\t3.0470752716064453e-1\t4.8658168859649127e+0\t3.0517578125000000e-5\n\t[2\]\t6.8329977989196777e-1\t1.2503051757812500e-1\t5.5826926231384277e-1\t4.4650639949963384e+0\t3.0517578125000000e-5\n\t[3\]\t9.0373212099075317e-1\t1.8695068359375000e-1\t7.1678143739700317e-1\t3.8340669508039502e+0\t3.0517578125000000e-5\n\t[4\]\t9.9780619144439697e-1\t2.4810791015625000e-1\t7.4969828128814697e-1\t3.0216621502152523e+0\t3.0517578125000000e-5\n\t[5\]\t9.5236867666244507e-1\t3.0831909179687500e-1\t6.4404958486557007e-1\t2.0889059484187866e+0\t3.0517578125000000e-5\n\t...and 44065 more errors.\n\tMax AbsError of 1.9986611604690552e+0 at index of 15080.\n\t[15080\]\t-9.9994289875030518e-1\t9.9871826171875000e-1\t1.9986611604690552e+0\t2.0012262087101997e+0\t3.0517578125000000e-5\n\tMax RelError of Infinity at index of 10584.\n\t[10584\]\t-5.8778524398803711e-1\t0.0000000000000000e+0\t5.8778524398803711e-1\tInfinity\t3.0517578125000000e-5\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
index c299d1e869b..442dc0ed53f 100644
--- a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
+++ b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
@@ -116,3 +116,9 @@
   [X Stitched sine-wave buffers at sample rate 44100 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.000090957,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[31080\]\t2.6490511032320000e+12\t5.6332010030746460e-1\t2.6490511032314365e+12\t4.7025680457444414e+12\t9.0957000000000003e-5\n\t[31081\]\t4.5700546817025259e-41\t6.1397600173950195e-1\t6.1397600173950195e-1\t1.0000000000000000e+0\t9.0957000000000003e-5\n\tMax AbsError of 2.6490511032314365e+12 at index of 31080.\n\tMax RelError of 4.7025680457444414e+12 at index of 31080.\n]
     expected: FAIL
 
+  [X SNR (-253.19268512166727 dB) is not greater than or equal to 85.58. Got -253.19268512166727.]
+    expected: FAIL
+
+  [X Stitched sine-wave buffers at sample rate 44100 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.000090957,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[31080\]\t-6.7816996732928000e+14\t5.6332010030746460e-1\t6.7816996732928063e+14\t1.2038802928550393e+15\t9.0957000000000003e-5\n\t[31081\]\t4.5854689648100989e-41\t6.1397600173950195e-1\t6.1397600173950195e-1\t1.0000000000000000e+0\t9.0957000000000003e-5\n\tMax AbsError of 6.7816996732928063e+14 at index of 31080.\n\tMax RelError of 1.2038802928550393e+15 at index of 31080.\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/webxr/ar-module/idlharness.https.window.js.ini b/tests/wpt/metadata-layout-2020/webxr/ar-module/idlharness.https.window.js.ini
index b8c2535d84f..c278bb7ef80 100644
--- a/tests/wpt/metadata-layout-2020/webxr/ar-module/idlharness.https.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/webxr/ar-module/idlharness.https.window.js.ini
@@ -2,3 +2,12 @@
   [XRSession interface: attribute interactionMode]
     expected: FAIL
 
+  [idl_test setup]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "environmentBlendMode" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "interactionMode" with the proper type]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/webxr/idlharness.https.window.js.ini b/tests/wpt/metadata-layout-2020/webxr/idlharness.https.window.js.ini
new file mode 100644
index 00000000000..fd188fe15cb
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webxr/idlharness.https.window.js.ini
@@ -0,0 +1,280 @@
+[idlharness.https.window.html]
+  [XRWebGLLayer must be primary interface of xrWebGLLayer]
+    expected: FAIL
+
+  [XRSession interface: calling requestReferenceSpace(XRReferenceSpaceType) on xrSession with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [XRSystem interface: operation isSessionSupported(XRSessionMode)]
+    expected: FAIL
+
+  [XRInputSourceArray interface: iterable<XRInputSource>]
+    expected: FAIL
+
+  [XRReferenceSpaceEvent interface: existence and properties of interface prototype object's @@unscopables property]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "visibilityState" with the proper type]
+    expected: FAIL
+
+  [XRReferenceSpace interface: xrReferenceSpace must inherit property "onreset" with the proper type]
+    expected: FAIL
+
+  [XRInputSourceArray interface: xrInputSourceArray must inherit property "length" with the proper type]
+    expected: FAIL
+
+  [XRWebGLLayer interface: calling getNativeFramebufferScaleFactor(XRSession) on xrWebGLLayer with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [XRReferenceSpaceEvent interface: attribute referenceSpace]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "antialias" with the proper type]
+    expected: FAIL
+
+  [XRReferenceSpaceEvent interface: existence and properties of interface prototype object]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "requestAnimationFrame(XRFrameRequestCallback)" with the proper type]
+    expected: FAIL
+
+  [XRReferenceSpace interface: calling getOffsetReferenceSpace(XRRigidTransform) on xrReferenceSpace with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [XRSessionEvent interface: xrSessionEvent must inherit property "session" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onend" with the proper type]
+    expected: FAIL
+
+  [XRPose interface: attribute emulatedPosition]
+    expected: FAIL
+
+  [XRInputSourcesChangeEvent must be primary interface of xrInputSourcesChangeEvent]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "requestReferenceSpace(XRReferenceSpaceType)" with the proper type]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "getNativeFramebufferScaleFactor(XRSession)" with the proper type]
+    expected: FAIL
+
+  [Stringification of xrReferenceSpace]
+    expected: FAIL
+
+  [XRBoundedReferenceSpace interface object length]
+    expected: FAIL
+
+  [XRWebGLLayer interface: operation getNativeFramebufferScaleFactor(XRSession)]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "framebuffer" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onselectstart" with the proper type]
+    expected: FAIL
+
+  [WebGLRenderingContext includes WebGLRenderingContextOverloads: member names are unique]
+    expected: FAIL
+
+  [XRSystem interface: operation requestSession(XRSessionMode, optional XRSessionInit)]
+    expected: FAIL
+
+  [XRReferenceSpaceEvent interface object name]
+    expected: FAIL
+
+  [XRReferenceSpaceEvent interface object length]
+    expected: FAIL
+
+  [XRRenderState must be primary interface of xrRenderState]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "updateRenderState(optional XRRenderStateInit)" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "cancelAnimationFrame(long)" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onselectend" with the proper type]
+    expected: FAIL
+
+  [XRSystem interface: attribute ondevicechange]
+    expected: FAIL
+
+  [XRReferenceSpace must be primary interface of xrReferenceSpace]
+    expected: FAIL
+
+  [XRBoundedReferenceSpace interface: existence and properties of interface prototype object's "constructor" property]
+    expected: FAIL
+
+  [XRReferenceSpaceEvent interface: existence and properties of interface object]
+    expected: FAIL
+
+  [XRPermissionStatus interface: attribute granted]
+    expected: FAIL
+
+  [XRPermissionStatus interface object length]
+    expected: FAIL
+
+  [Stringification of xrInputSourcesChangeEvent]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "getViewport(XRView)" with the proper type]
+    expected: FAIL
+
+  [XRInputSourcesChangeEvent interface: xrInputSourcesChangeEvent must inherit property "session" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "end()" with the proper type]
+    expected: FAIL
+
+  [idl_test setup]
+    expected: FAIL
+
+  [XRReferenceSpaceEvent interface: attribute transform]
+    expected: FAIL
+
+  [XRBoundedReferenceSpace interface: existence and properties of interface object]
+    expected: FAIL
+
+  [XRInputSourcesChangeEvent interface: xrInputSourcesChangeEvent must inherit property "added" with the proper type]
+    expected: FAIL
+
+  [XRRigidTransform interface: new XRRigidTransform() must inherit property "matrix" with the proper type]
+    expected: FAIL
+
+  [XRInputSourceArray must be primary interface of xrInputSourceArray]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onselect" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "inputSources" with the proper type]
+    expected: FAIL
+
+  [Stringification of xrSession]
+    expected: FAIL
+
+  [WebGLRenderingContext includes WebGLRenderingContextBase: member names are unique]
+    expected: FAIL
+
+  [XRPermissionStatus interface: existence and properties of interface prototype object's @@unscopables property]
+    expected: FAIL
+
+  [XRWebGLLayer interface: calling getViewport(XRView) on xrWebGLLayer with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [WebGLRenderingContextBase interface: webGLRenderingContextBase must inherit property "makeXRCompatible()" with the proper type]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "ignoreDepthValues" with the proper type]
+    expected: FAIL
+
+  [Stringification of xrSessionEvent]
+    expected: FAIL
+
+  [XRPermissionStatus interface: existence and properties of interface prototype object's "constructor" property]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "oninputsourceschange" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onsqueezeend" with the proper type]
+    expected: FAIL
+
+  [XRBoundedReferenceSpace interface: existence and properties of interface prototype object's @@unscopables property]
+    expected: FAIL
+
+  [XRPermissionStatus interface object name]
+    expected: FAIL
+
+  [XRRenderState interface: xrRenderState must inherit property "inlineVerticalFieldOfView" with the proper type]
+    expected: FAIL
+
+  [XRBoundedReferenceSpace interface: attribute boundsGeometry]
+    expected: FAIL
+
+  [XRSession interface: calling cancelAnimationFrame(long) on xrSession with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [XRReferenceSpace interface: xrReferenceSpace must inherit property "getOffsetReferenceSpace(XRRigidTransform)" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: calling requestAnimationFrame(XRFrameRequestCallback) on xrSession with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [XRRenderState interface: xrRenderState must inherit property "depthNear" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onsqueezestart" with the proper type]
+    expected: FAIL
+
+  [XRInputSourcesChangeEvent interface: xrInputSourcesChangeEvent must inherit property "removed" with the proper type]
+    expected: FAIL
+
+  [XRReferenceSpace interface: attribute onreset]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onsqueeze" with the proper type]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "framebufferHeight" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: operation requestReferenceSpace(XRReferenceSpaceType)]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "framebufferWidth" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "renderState" with the proper type]
+    expected: FAIL
+
+  [Stringification of xrWebGLLayer]
+    expected: FAIL
+
+  [XRReferenceSpaceEvent interface: existence and properties of interface prototype object's "constructor" property]
+    expected: FAIL
+
+  [Stringification of xrRenderState]
+    expected: FAIL
+
+  [XRSession must be primary interface of xrSession]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onvisibilitychange" with the proper type]
+    expected: FAIL
+
+  [XRPermissionStatus interface: existence and properties of interface prototype object]
+    expected: FAIL
+
+  [XRSessionEvent must be primary interface of xrSessionEvent]
+    expected: FAIL
+
+  [XRBoundedReferenceSpace interface object name]
+    expected: FAIL
+
+  [XRWebGLLayer interface: attribute ignoreDepthValues]
+    expected: FAIL
+
+  [XRRenderState interface: xrRenderState must inherit property "depthFar" with the proper type]
+    expected: FAIL
+
+  [XRRenderState interface: xrRenderState must inherit property "baseLayer" with the proper type]
+    expected: FAIL
+
+  [XRPermissionStatus interface: existence and properties of interface object]
+    expected: FAIL
+
+  [XRSession interface: calling updateRenderState(optional XRRenderStateInit) on xrSession with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [XRBoundedReferenceSpace interface: existence and properties of interface prototype object]
+    expected: FAIL
+
+  [Stringification of xrInputSourceArray]
+    expected: FAIL
+
+  [XRSession interface: operation end()]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 899bcfc6d36..af4e0236a06 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -347075,7 +347075,7 @@
        []
       ],
       "asserts.py": [
-       "d0bbf522c2414cb78ed7d30502c83b37f825e380",
+       "f65137463b48f94fd0c5f2383b1a7c35bcd1de54",
        []
       ],
       "authentication.py": [
@@ -403920,7 +403920,7 @@
        ]
       ],
       "is.html": [
-       "0d905dcd4f6c4796095b06d24a8e9e11a01782bc",
+       "8490f096976340bc970ed2c6156fb60f433768e9",
        [
         null,
         {}
@@ -510286,7 +510286,7 @@
    "webxr": {
     "ar-module": {
      "idlharness.https.window.js": [
-      "1268f4ea2a5eb228fb49a6f06d8905f8d9480ae7",
+      "51cc3c42808a66ddde083b8982317e8cdd961c71",
       [
        "webxr/ar-module/idlharness.https.window.html",
        {
@@ -510504,7 +510504,7 @@
      ]
     },
     "idlharness.https.window.js": [
-     "04b2e3d91eb38acb512ec469b1bb261d8eb625b2",
+     "dae201ebc938aa0f21c462505dff56fd13fa756e",
      [
       "webxr/idlharness.https.window.html",
       {
@@ -510516,8 +510516,13 @@
         [
          "script",
          "/resources/idlharness.js"
+        ],
+        [
+         "timeout",
+         "long"
         ]
-       ]
+       ],
+       "timeout": "long"
       }
      ]
     ],
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
deleted file mode 100644
index f64b45fea6b..00000000000
--- a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[hit-test-floats-002.html]
-  [Hit test float]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
new file mode 100644
index 00000000000..4bfb0c2053a
--- /dev/null
+++ b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-004.html]
+  [Miss float below something else]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/css-transforms/transform-scale-hittest.html.ini b/tests/wpt/metadata/css/css-transforms/transform-scale-hittest.html.ini
index f8e7e539aae..4a1e8110f6f 100644
--- a/tests/wpt/metadata/css/css-transforms/transform-scale-hittest.html.ini
+++ b/tests/wpt/metadata/css/css-transforms/transform-scale-hittest.html.ini
@@ -2,6 +2,3 @@
   [Hit test intersecting scaled box]
     expected: FAIL
 
-  [Hit test within unscaled box]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/css/css-transitions/no-transition-from-ua-to-blocking-stylesheet.html.ini b/tests/wpt/metadata/css/css-transitions/no-transition-from-ua-to-blocking-stylesheet.html.ini
index 70a00a101f6..e35a452a186 100644
--- a/tests/wpt/metadata/css/css-transitions/no-transition-from-ua-to-blocking-stylesheet.html.ini
+++ b/tests/wpt/metadata/css/css-transitions/no-transition-from-ua-to-blocking-stylesheet.html.ini
@@ -1,2 +1,2 @@
 [no-transition-from-ua-to-blocking-stylesheet.html]
-  expected: FAIL
+  expected: TIMEOUT
diff --git a/tests/wpt/metadata/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini b/tests/wpt/metadata/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
index c884dc82eab..628b1fab770 100644
--- a/tests/wpt/metadata/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
+++ b/tests/wpt/metadata/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
@@ -2,6 +2,3 @@
   [listeners are called when <iframe> is resized]
     expected: FAIL
 
-  [listeners are called correct number of times]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/fetch/content-type/response.window.js.ini b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
index d9d224c6417..1a8724198c2 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -315,18 +315,18 @@
   [<iframe>: separate response Content-Type: text/html;" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: */* text/html]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;x=" text/plain]
-    expected: FAIL
-
   [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
+  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html */*]
+    expected: FAIL
+
+  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
index 30e1b851fd4..aa6eb8f6085 100644
--- a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,3 +11,6 @@
   [X-Content-Type-Options%3A%20nosniff%2C%2C%40%23%24%23%25%25%26%5E%26%5E*()()11!]
     expected: FAIL
 
+  [X-Content-Type-Options%3A%20'NosniFF']
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
similarity index 71%
rename from tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
rename to tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
index 51f8272a6de..dc2e45516de 100644
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
@@ -1,4 +1,4 @@
-[traverse_the_history_3.html]
+[traverse_the_history_5.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini b/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini
index 6852d7663de..c12c0f8ae48 100644
--- a/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini
+++ b/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini
@@ -1,8 +1,4 @@
 [skip-document-with-fragment.html]
-  expected: TIMEOUT
   [Autofocus elements in iframed documents with URL fragments should be skipped.]
     expected: FAIL
 
-  [Autofocus elements in top-level browsing context's documents with URI fragments should be skipped.]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini b/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
index 6b68e9094e4..8b743f36e1d 100644
--- a/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
+++ b/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
@@ -1,16 +1,20 @@
 [supported-elements.html]
+  expected: TIMEOUT
   [Contenteditable element should support autofocus]
     expected: FAIL
 
   [Element with tabindex should support autofocus]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Host element with delegatesFocus including no focusable descendants should be skipped]
-    expected: FAIL
+    expected: NOTRUN
 
   [Area element should support autofocus]
-    expected: FAIL
+    expected: NOTRUN
 
   [Host element with delegatesFocus should support autofocus]
-    expected: FAIL
+    expected: NOTRUN
+
+  [Non-HTMLElement should not support autofocus]
+    expected: NOTRUN
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index dc856a3d5a3..e440b1e38c6 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,5 +1,6 @@
 [iframe_sandbox_popups_nonescaping-3.html]
   type: testharness
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN
 
diff --git a/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini b/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
index 4d4449c983e..d16e3ccb769 100644
--- a/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
+++ b/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
@@ -4,7 +4,7 @@
     expected: FAIL
 
   [Rejection handler on pending-then-rejected promise]
-    expected: TIMEOUT
+    expected: FAIL
 
   [Sanity check: this all works as expected with no promises involved]
     expected: FAIL
@@ -16,5 +16,5 @@
     expected: FAIL
 
   [Fulfillment handler on pending-then-fulfilled promise]
-    expected: FAIL
+    expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
index 35bd1b1ba84..8b1c7d6c5f5 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
@@ -140,3 +140,6 @@
   [X Rendered audio for channel 5 does not equal [0,0.0626220703125,0.125030517578125,0.18695068359375,0.24810791015625,0.308319091796875,0.3673095703125,0.42486572265625,0.480743408203125,0.53472900390625,0.58660888671875,0.636199951171875,0.68328857421875,0.727691650390625,0.76922607421875,0.8077392578125...\] with an element-wise tolerance of {"absoluteThreshold":0.000030517578125,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[1\]\t3.6732959747314453e-1\t6.2622070312500000e-2\t3.0470752716064453e-1\t4.8658168859649127e+0\t3.0517578125000000e-5\n\t[2\]\t6.8329977989196777e-1\t1.2503051757812500e-1\t5.5826926231384277e-1\t4.4650639949963384e+0\t3.0517578125000000e-5\n\t[3\]\t9.0373212099075317e-1\t1.8695068359375000e-1\t7.1678143739700317e-1\t3.8340669508039502e+0\t3.0517578125000000e-5\n\t[4\]\t9.9780619144439697e-1\t2.4810791015625000e-1\t7.4969828128814697e-1\t3.0216621502152523e+0\t3.0517578125000000e-5\n\t[5\]\t9.5236867666244507e-1\t3.0831909179687500e-1\t6.4404958486557007e-1\t2.0889059484187866e+0\t3.0517578125000000e-5\n\t...and 44055 more errors.\n\tMax AbsError of 1.9999977350234985e+0 at index of 32411.\n\t[32411\]\t9.9999773502349854e-1\t-1.0000000000000000e+0\t1.9999977350234985e+0\t1.9999977350234985e+0\t3.0517578125000000e-5\n\tMax RelError of Infinity at index of 12348.\n\t[12348\]\t9.5105654001235962e-1\t0.0000000000000000e+0\t9.5105654001235962e-1\tInfinity\t3.0517578125000000e-5\n]
     expected: FAIL
 
+  [X Rendered audio for channel 5 does not equal [0,0.0626220703125,0.125030517578125,0.18695068359375,0.24810791015625,0.308319091796875,0.3673095703125,0.42486572265625,0.480743408203125,0.53472900390625,0.58660888671875,0.636199951171875,0.68328857421875,0.727691650390625,0.76922607421875,0.8077392578125...\] with an element-wise tolerance of {"absoluteThreshold":0.000030517578125,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[1\]\t3.6732959747314453e-1\t6.2622070312500000e-2\t3.0470752716064453e-1\t4.8658168859649127e+0\t3.0517578125000000e-5\n\t[2\]\t6.8329977989196777e-1\t1.2503051757812500e-1\t5.5826926231384277e-1\t4.4650639949963384e+0\t3.0517578125000000e-5\n\t[3\]\t9.0373212099075317e-1\t1.8695068359375000e-1\t7.1678143739700317e-1\t3.8340669508039502e+0\t3.0517578125000000e-5\n\t[4\]\t9.9780619144439697e-1\t2.4810791015625000e-1\t7.4969828128814697e-1\t3.0216621502152523e+0\t3.0517578125000000e-5\n\t[5\]\t9.5236867666244507e-1\t3.0831909179687500e-1\t6.4404958486557007e-1\t2.0889059484187866e+0\t3.0517578125000000e-5\n\t...and 44065 more errors.\n\tMax AbsError of 1.9986611604690552e+0 at index of 15080.\n\t[15080\]\t-9.9994289875030518e-1\t9.9871826171875000e-1\t1.9986611604690552e+0\t2.0012262087101997e+0\t3.0517578125000000e-5\n\tMax RelError of Infinity at index of 10584.\n\t[10584\]\t-5.8778524398803711e-1\t0.0000000000000000e+0\t5.8778524398803711e-1\tInfinity\t3.0517578125000000e-5\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
index 3d7cfd76d97..ecdef72749c 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
@@ -347,3 +347,9 @@
   [X Stitched sine-wave buffers at sample rate 44100 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.000090957,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[31080\]\t2.6490511032320000e+12\t5.6332010030746460e-1\t2.6490511032314365e+12\t4.7025680457444414e+12\t9.0957000000000003e-5\n\t[31081\]\t4.5700546817025259e-41\t6.1397600173950195e-1\t6.1397600173950195e-1\t1.0000000000000000e+0\t9.0957000000000003e-5\n\tMax AbsError of 2.6490511032314365e+12 at index of 31080.\n\tMax RelError of 4.7025680457444414e+12 at index of 31080.\n]
     expected: FAIL
 
+  [X SNR (-253.19268512166727 dB) is not greater than or equal to 85.58. Got -253.19268512166727.]
+    expected: FAIL
+
+  [X Stitched sine-wave buffers at sample rate 44100 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.000090957,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[31080\]\t-6.7816996732928000e+14\t5.6332010030746460e-1\t6.7816996732928063e+14\t1.2038802928550393e+15\t9.0957000000000003e-5\n\t[31081\]\t4.5854689648100989e-41\t6.1397600173950195e-1\t6.1397600173950195e-1\t1.0000000000000000e+0\t9.0957000000000003e-5\n\tMax AbsError of 6.7816996732928063e+14 at index of 31080.\n\tMax RelError of 1.2038802928550393e+15 at index of 31080.\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webxr/ar-module/idlharness.https.window.js.ini b/tests/wpt/metadata/webxr/ar-module/idlharness.https.window.js.ini
index b8c2535d84f..c278bb7ef80 100644
--- a/tests/wpt/metadata/webxr/ar-module/idlharness.https.window.js.ini
+++ b/tests/wpt/metadata/webxr/ar-module/idlharness.https.window.js.ini
@@ -2,3 +2,12 @@
   [XRSession interface: attribute interactionMode]
     expected: FAIL
 
+  [idl_test setup]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "environmentBlendMode" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "interactionMode" with the proper type]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webxr/idlharness.https.window.js.ini b/tests/wpt/metadata/webxr/idlharness.https.window.js.ini
index 2bccb52924f..14e1efa1e84 100644
--- a/tests/wpt/metadata/webxr/idlharness.https.window.js.ini
+++ b/tests/wpt/metadata/webxr/idlharness.https.window.js.ini
@@ -161,3 +161,180 @@
   [XRPermissionStatus interface: existence and properties of interface object]
     expected: FAIL
 
+  [XRWebGLLayer must be primary interface of xrWebGLLayer]
+    expected: FAIL
+
+  [XRSession interface: calling requestReferenceSpace(XRReferenceSpaceType) on xrSession with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "visibilityState" with the proper type]
+    expected: FAIL
+
+  [XRReferenceSpace interface: xrReferenceSpace must inherit property "onreset" with the proper type]
+    expected: FAIL
+
+  [XRInputSourceArray interface: xrInputSourceArray must inherit property "length" with the proper type]
+    expected: FAIL
+
+  [XRWebGLLayer interface: calling getNativeFramebufferScaleFactor(XRSession) on xrWebGLLayer with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "antialias" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "requestAnimationFrame(XRFrameRequestCallback)" with the proper type]
+    expected: FAIL
+
+  [XRReferenceSpace interface: calling getOffsetReferenceSpace(XRRigidTransform) on xrReferenceSpace with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [XRSessionEvent interface: xrSessionEvent must inherit property "session" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onend" with the proper type]
+    expected: FAIL
+
+  [XRInputSourcesChangeEvent must be primary interface of xrInputSourcesChangeEvent]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "requestReferenceSpace(XRReferenceSpaceType)" with the proper type]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "getNativeFramebufferScaleFactor(XRSession)" with the proper type]
+    expected: FAIL
+
+  [Stringification of xrReferenceSpace]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "framebuffer" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onselectstart" with the proper type]
+    expected: FAIL
+
+  [XRRenderState must be primary interface of xrRenderState]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "updateRenderState(optional XRRenderStateInit)" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "cancelAnimationFrame(long)" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onselectend" with the proper type]
+    expected: FAIL
+
+  [XRReferenceSpace must be primary interface of xrReferenceSpace]
+    expected: FAIL
+
+  [Stringification of xrInputSourcesChangeEvent]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "getViewport(XRView)" with the proper type]
+    expected: FAIL
+
+  [XRInputSourcesChangeEvent interface: xrInputSourcesChangeEvent must inherit property "session" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "end()" with the proper type]
+    expected: FAIL
+
+  [idl_test setup]
+    expected: FAIL
+
+  [XRInputSourcesChangeEvent interface: xrInputSourcesChangeEvent must inherit property "added" with the proper type]
+    expected: FAIL
+
+  [XRRigidTransform interface: new XRRigidTransform() must inherit property "matrix" with the proper type]
+    expected: FAIL
+
+  [XRInputSourceArray must be primary interface of xrInputSourceArray]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onselect" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "inputSources" with the proper type]
+    expected: FAIL
+
+  [Stringification of xrSession]
+    expected: FAIL
+
+  [XRWebGLLayer interface: calling getViewport(XRView) on xrWebGLLayer with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [WebGLRenderingContextBase interface: webGLRenderingContextBase must inherit property "makeXRCompatible()" with the proper type]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "ignoreDepthValues" with the proper type]
+    expected: FAIL
+
+  [Stringification of xrSessionEvent]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "oninputsourceschange" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onsqueezeend" with the proper type]
+    expected: FAIL
+
+  [XRRenderState interface: xrRenderState must inherit property "inlineVerticalFieldOfView" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: calling cancelAnimationFrame(long) on xrSession with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [XRReferenceSpace interface: xrReferenceSpace must inherit property "getOffsetReferenceSpace(XRRigidTransform)" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: calling requestAnimationFrame(XRFrameRequestCallback) on xrSession with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [XRRenderState interface: xrRenderState must inherit property "depthNear" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onsqueezestart" with the proper type]
+    expected: FAIL
+
+  [XRInputSourcesChangeEvent interface: xrInputSourcesChangeEvent must inherit property "removed" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onsqueeze" with the proper type]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "framebufferHeight" with the proper type]
+    expected: FAIL
+
+  [XRWebGLLayer interface: xrWebGLLayer must inherit property "framebufferWidth" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "renderState" with the proper type]
+    expected: FAIL
+
+  [Stringification of xrWebGLLayer]
+    expected: FAIL
+
+  [Stringification of xrRenderState]
+    expected: FAIL
+
+  [XRSession must be primary interface of xrSession]
+    expected: FAIL
+
+  [XRSession interface: xrSession must inherit property "onvisibilitychange" with the proper type]
+    expected: FAIL
+
+  [XRSessionEvent must be primary interface of xrSessionEvent]
+    expected: FAIL
+
+  [XRRenderState interface: xrRenderState must inherit property "depthFar" with the proper type]
+    expected: FAIL
+
+  [XRRenderState interface: xrRenderState must inherit property "baseLayer" with the proper type]
+    expected: FAIL
+
+  [XRSession interface: calling updateRenderState(optional XRRenderStateInit) on xrSession with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [Stringification of xrInputSourceArray]
+    expected: FAIL
+
diff --git a/tests/wpt/web-platform-tests/css/selectors/invalidation/is.html b/tests/wpt/web-platform-tests/css/selectors/invalidation/is.html
index 0d905dcd4f6..8490f096976 100644
--- a/tests/wpt/web-platform-tests/css/selectors/invalidation/is.html
+++ b/tests/wpt/web-platform-tests/css/selectors/invalidation/is.html
@@ -73,7 +73,7 @@
         </div>
       </div>
       <div class="h" id="h1">
-        Black
+        Blue
       </div>
     </div>
     <div class="c" id="c2">
@@ -132,8 +132,8 @@
       test(() => {
         a1.className = "a";
         assert_equals(getComputedStyle(b2).color, blue);
-        assert_equals(getComputedStyle(h1).color, black);
+        assert_equals(getComputedStyle(h1).color, blue);
       }, "Test specificity of :is().");
     </script>
   </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/support/asserts.py b/tests/wpt/web-platform-tests/webdriver/tests/support/asserts.py
index d0bbf522c24..f65137463b4 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/support/asserts.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/support/asserts.py
@@ -2,6 +2,8 @@ import base64
 import imghdr
 import struct
 
+from six import PY3
+
 from webdriver import Element, NoSuchAlertException, WebDriverException
 
 
@@ -81,8 +83,15 @@ def assert_response_headers(headers):
     """
     assert 'cache-control' in headers
     assert 'no-cache' == headers['cache-control']
-    assert 'content-type' in headers
-    assert 'application/json; charset=utf-8' == headers['content-type']
+    # In Python 2, HTTPResponse normalizes header keys to lowercase, whereas
+    # Python 3 preserves the case. See
+    # https://github.com/web-platform-tests/wpt/pull/22858#issuecomment-612656097
+    if PY3:
+        assert 'Content-Type' in headers
+        assert 'application/json; charset=utf-8' == headers['Content-Type']
+    else:
+        assert 'content-type' in headers
+        assert 'application/json; charset=utf-8' == headers['content-type']
 
 
 def assert_dialog_handled(session, expected_text, expected_retval):
diff --git a/tests/wpt/web-platform-tests/webxr/ar-module/idlharness.https.window.js b/tests/wpt/web-platform-tests/webxr/ar-module/idlharness.https.window.js
index 1268f4ea2a5..51cc3c42808 100644
--- a/tests/wpt/web-platform-tests/webxr/ar-module/idlharness.https.window.js
+++ b/tests/wpt/web-platform-tests/webxr/ar-module/idlharness.https.window.js
@@ -10,7 +10,8 @@ idl_test(
   ['webxr', 'dom'],
   async idl_array => {
     idl_array.add_objects({
-      // TODO: XRSession
+      XRSession: ['xrSession'],
     });
+    self.xrSession = await navigator.xr.requestSession('inline');
   }
 );
diff --git a/tests/wpt/web-platform-tests/webxr/idlharness.https.window.js b/tests/wpt/web-platform-tests/webxr/idlharness.https.window.js
index 04b2e3d91eb..dae201ebc93 100644
--- a/tests/wpt/web-platform-tests/webxr/idlharness.https.window.js
+++ b/tests/wpt/web-platform-tests/webxr/idlharness.https.window.js
@@ -1,5 +1,6 @@
 // META: script=/resources/WebIDLParser.js
 // META: script=/resources/idlharness.js
+// META: timeout=long
 
 'use strict';
 
@@ -7,11 +8,48 @@
 
 idl_test(
   ['webxr'],
-  ['permissions', 'webgl1', 'html', 'dom'],
+  ['permissions', 'webgl1', 'geometry', 'html', 'dom'],
   async idl_array => {
     idl_array.add_objects({
       Navigator: ['navigator'],
       XR: ['navigator.xr'],
+      // TODO: XRSystem
+      XRSession: ['xrSession'],
+      XRRenderState: ['xrRenderState'],
+      // TODO: XRFrame
+      // TODO: XRSpace
+      XRReferenceSpace: ['xrReferenceSpace'],
+      // TODO: XRBoundedReferenceSpace
+      // TODO: XRView
+      // TODO: XRViewport
+      XRRigidTransform: ['new XRRigidTransform()'],
+      // TODO: XRPose
+      // TODO: XRViewerPose
+      // TODO: XRInputSource
+      XRInputSourceArray: ['xrInputSourceArray'],
+      XRWebGLLayer: ['xrWebGLLayer'],
+      WebGLRenderingContextBase: ['webGLRenderingContextBase'],
+      XRSessionEvent: ['xrSessionEvent'],
+      // TODO: XRInputSourceEvent
+      XRInputSourcesChangeEvent: ['xrInputSourcesChangeEvent'],
+      // TODO: XRReferenceSpaceEvent
+      // TODO: XRPermissionStatus
     });
+
+    self.xrSession = await navigator.xr.requestSession('inline');
+    self.xrRenderState = self.xrSession.renderState;
+    self.xrReferenceSpace = await self.xrSession.requestReferenceSpace('viewer');
+    self.xrInputSourceArray = self.xrSession.inputSources;
+    self.xrSessionEvent = new XRSessionEvent('end', {session: self.xrSession});
+    self.xrInputSourcesChangeEvent = new XRInputSourcesChangeEvent('inputsourceschange', {
+      session: self.xrSession,
+      added: [],
+      removed: [],
+    });
+
+    // XRWebGLRenderingContext is a typedef to either WebGLRenderingContext or WebGL2RenderingContext.
+    const canvas = document.createElement('canvas');
+    self.webGLRenderingContextBase = canvas.getContext('webgl');
+    self.xrWebGLLayer = new XRWebGLLayer(self.xrSession, self.webGLRenderingContextBase);
   }
 );